chapter 02: refactoring genericEncoder to use the encoder factory

devcorpio · Mar 30, 2019 · a14b46f · a14b46f
1 parent a08b781
commit a14b46f
Showing 1 changed file with 33 additions and 0 deletions.
diff --git a/chapter-02-the-open-closed-principle/refactor/genericEncoder.js b/chapter-02-the-open-closed-principle/refactor/genericEncoder.js
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+function genericEncoder(encoderFactory) {
+    function encodeToFormat(data, format) {
+        const encoder = encoderFactory.createForFormat(format);
+
+        data = prepareData(data, format);
+
+        return encoder.encode(data);
+    }
+
+    function prepareData(data, format) {
+        switch (format) {
+            case 'json': {
+                data = this.forceArray(data);
+                data = this.fixKeys(data);
+            }
+            case 'xml': {
+                data = this.fixAttributes(data);
+                break;
+            }
+            default: {
+                throw new Error('Format not supported');
+            }
+        }
+
+        return data;
+    }
+
+    return {
+        encodeToFormat,
+    };
+}
+
+module.exports = genericEncoder;